article · Energy Reports
Growing electricity demand, constrained generation capacities, the depletion of conventional fuels, and environmental concerns have driven widespread interest in distributed generation systems based on renewable energy. Electricity grid operators seek reliable methods to improve power quality and integrate greater amounts of renewable power into existing networks. However, because primary renewable sources such as wind and solar photovoltaic systems are intermittent, their integration has led to an increase in power quality challenges. Maintaining acceptable power quality standards becomes harder as renewable penetration grows. These complications typically present as voltage and frequency fluctuations across the electricity network. To address these operational hurdles, the review examines the specific power quality issues that arise in distributed renewable energy generation networks and explores mitigation techniques designed to manage them.
Transitioning to clean energy requires reliable electricity grids. Because wind and solar power generate fluctuating supplies of energy, adding them to existing grids can cause voltage and frequency instability. Understanding and resolving these power quality issues ensures that utilities can integrate higher proportions of clean energy without risking system instability or disruptions to everyday power supplies.
The review points to applications for power system operators and grid utilities seeking methods to counter voltage and frequency fluctuations. The findings inform strategies to integrate higher shares of intermittent renewables like wind and solar. Because the work is a review of existing issues and mitigation techniques rather than a report on a specific proprietary technology, the abstract does not indicate a direct commercial application pathway or a specific readiness level.
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The rapid increase in power consumption, limited generation capacities, rapid depletion of traditional energy sources, and adverse ecological effects have increased research interest in distributed generation (DG) systems dominated by renewable energy (RE) sources. Power system operators are looking for proven solutions to enhance power quality (PQ) and raise the overall penetration of renewable energy sources in grid-connected systems. However, because most renewable energy sources are intermittent such as wind power or solar PV, power quality issues in the generation network have rapidly increased. As the prevalence of renewable energy sources increases, keeping a permissible level of power quality is difficult. These power quality issues often manifest themselves in voltage and frequency fluctuations in the power system. This review focuses on power quality issues in distributed renewable energy generation (DREG) systems, grid-connected DREG systems, and mitigating techniques.
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DOI: 10.1016/j.egyr.2025.02.050
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